Advice?

I’ve been trying to conceive since the age of 18, I am now 21 and still haven’t managed to get my BFP. I’ve been diagnosed with PCOS which is why I’m finding it hard to conceive. I had sex with my long term partner around three weeks ago and it was about 7 days after my period. I’ve been peeing non stop and have really bad cramps. Have no idea when my next period is due because I have an irregular cycle. I’m so scared to take a test because I’ve had so many negatives. It breaks my heart and I want my baby so badly! I even had a white witch put a baby spell on me to help me conceive. Does anyone have any advice or encouragement? I so need some support ladies ❤️